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Fritz Zyme 7 Live Bacteria (Freshwater)

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$9.99
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  • Quickly establishes beneficial bacteria in new aquariums and speeds up the aquarium cycling process
  • Helps prevent fish loss
  • Fortifies beneficial bacteria in established aquariums

Fritz Zyme 7 is live beneficial bacteria in a bottle. Adding it to your aquarium will help increase the beneficial bacteria count. In a new aquarium, this helps to establish the  beneficial bacteria that breaks down fish waste, which means you can add fish to your new aquarium sooner.

In an established aquarium, FritzZyme 7 helps if you are adding additional fish or increasing the amount of food that you are feeding. It can help rebuild the beneficial bacteria population after a power outage, after you have done a deep cleaning (where beneficial bacteria can be disrupted during the cleaning process), and after you have changed filter cartridges or filters. It can also be used after you have changed water and finished medicating an aquarium to help reestablish beneficial bacteria.

Customer Reviews

Based on 320 reviews
95%
(305)
2%
(7)
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(4)
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(4)
K
Katrina D. (Minneapolis, MN, US)
Seems to really help

My first experiences with Fritzyme have been positive. Seems to really help establish helpful bacteria more quickly than other bottled formulas

F
Felicia H. (Hayden, ID, US)
New Tanks NEEEEEEED This as a CYA measure!

I LOVE fritzyme 7. I use it in every new tank setup even with a seeded filter as a CYA measure. Shipped quickly and without any issues. Thanks Coop!

J
Jordan W.

Perfect exactly item i was recommended to get

H
H.D. (Mequon, WI, US)
Saw nitrites after 4 days!

Nitrites started showing up only 4 days after adding, I had my doubts about it working, but im very very impressed

C
Corin K. (Greeley, CO, US)
Works, but Open Bottles Don't Last Very Long

This worked well to cycle my tank. I haven't used any other brands, so I have nothing to compare to (Although I tried cycling with no added bacteria, I don't think it would have ever happened, so thankfully Fritz Zyme 7 was there to help). Most people online felt that this was a more reliable brand than many others. And I trust Aquarium co-op to handle it well. I bought a large bottle and saved some of it to use later as needed long before the expiration date. But it didn't seem to work later and it no longer had a smell. My second bottle the smell seems to slowly be diminishing even after a week of being open. I continue to buy them, but only the small bottles and once it is open I use it all within a month or so, and just keep an unopened small bottle on hand as needed. I wish the bottle would have a warning on it, telling me how long it is good for after opening.

D
Dawn Z. (Bensalem, PA, US)

Helped cycle my tank fast although you need almost half the small bottle

A
A.R. (Seattle, WA, US)
Easy to use

I just started cycling new tank with this. I haven't gotten the results yet, but it was easy to use and seems like a good value for the price.

A
Alicia G. (Miami, FL, US)
Great product

Helps you cycle the tank. Works great!

J
John D. (Dunbar, WV, US)
This product stands up on its own!

I used this product to cycle my 75g aquarium and will 100% use again. Well worth the money and the excellent customer service from Aquarium Co-Op!

M
Michelle E. (Orlando, FL, US)
Great stuff

Love this stuff- it is great for starting a new tank and when doing large water changes.